Improvement of perpendicular magnetic properties by postannealing for M′-CoCrPt-M stacked media (M, M′ = Ti, Ta, Ru, Pt, CrMn, MnSi)

Shin Saito, Norikazu Itagaki, Migaku Takahashi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In this paper, we discuss the effect of postannealing on magnetic properties and microstructure for CoCr-based perpendicular recording media. Material investigation for cap- and under-layers of the postannealed media is carried out, and significant improvement of magnetic properties is confirmed for the media with both titanium cap- and under-layers. This is caused by decoupling of magnetic exchange interaction among grains due to diffusion of Ti into the grain boundaries and by elimination of the nanocrystalline initial layer that behaves like a soft magnetic layer.

Original languageEnglish
Pages (from-to)2467-2469
Number of pages3
JournalIEEE Transactions on Magnetics
Volume40
Issue number4 II
DOIs
Publication statusPublished - 2004 Jul

Keywords

  • CoCr-based perpendicular media
  • Exchange coupling
  • Postannealing
  • Titanium

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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